The new super mario bros wonder would’ve really benefited from that. Or maybe just zoom out a bit. Four characters on screen and all the real estate is gone. The camera always follows a seeminlgy random player which sometimes even switches around mid level who it follows. It’s really annoying to play multiplayer. No if I had the same screen, just smaller, four times for each their one. That’d be amazing!

If you wanna get real fancy, it could be a single screen when everyone’s close and split when someone goes to far away. Probably works best for two players though